Let us recall the classical monodromy theorem in the Milnor fibration setting, see [1]}:
 Let \(h^i\colon H^i(M)\rightarrow H^i(M)\)  be the \(i\) -th monodromy operator on the Milnor fibre associated to a germ \(g\colon ({n+1},0)\rightarrow (0)\)  (not necessarily with isolated singularities). Then
